Im not really sure why this age old already closed subject is coming up again.
Nation having directly used it in combat / on operation is not required for it to be considered. Whats needed is valid proof it was fitted / could be fitted / was planned / trailed in a solid way.
Since you mentioned the F-4F, lets take that example again. We have 3 primary sources that link the AIM-9J, directly to the German F-4F early.
1) The F-4F pilots manual
2) The F-4F Weapons manual
3) Clear use of the AIM-9J practice round (identical in every way to the combat